Mold Species Reference Guide
Comprehensive information on indoor mold species commonly found in Oklahoma homes
Aspergillus
Most common indoor mold genus. Some species produce mycotoxins. Major allergen.
Penicillium
Blue-green mold found on damp materials. Source of penicillin. Fast-growing allergen.
Stachybotrys (Black Mold)
Facts vs. fears about “toxic black mold.” What research actually says.
Cladosporium
Most common mold indoors and outdoors. Major allergen. 3,000 spores/m³ clinical threshold.
Chaetomium
Key indicator of chronic water damage. Breaks down cellulose materials like drywall paper.
Alternaria
One of the most common outdoor allergens. Strongly associated with asthma.
Fusarium
Water damage indicator with agricultural roots. Requires very wet conditions.
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